By the time NFL fans sit down to watch the first game of the 2013-2014 season in two weeks, advertisers will have gobbled up 90 percent of the commercial slots available during the 2014 broadcast of the championship, according to Fox.

"It's selling the way the No. 1 show on TV should sell," Neil Mulcahy, executive vice president of Fox Sports, told USA Today. "We're seeing more and more dollars come into sports — particularly live sports."

He told Variety he expects to be sold out before November, around the same time the network had sold out its ad inventory for the 2011 broadcast.

N.J. NEWS ON THE GO Our redesigned mobile site has quick page loads and app-style navigation, and lets you join the conversation with comments and social media. Visit NJ.com from any mobile browser.

Live sports, the Super Bowl in particular, have always been a popular choice for national brands to market to audiences. As seen in 2012 and 2013, a steady audience produces a similarly steady roster of companies using the NFL championship to market to consumers.

"It's incredible the way people are attracted to live sports, and certainly the NFL is at the top of that," Mulcahy said in an interview with Variety. "You know exactly the audience you're getting. You can figure out the kind of return on investment, because it's always there."